Communal enabling of quality

Having written ~20 FAs - and this is my subjective experience - in vast majority of cases I was doing the work alone. Other editors helped a little, particularly with improving by non-native English, and of course there were hundreds of tiny additions/improvements over time. Did the article become better with more contributors editing it? Yes. But if I were to quantify it, I'd say that if on average my contribution was 100, than the contribution of 100 other editors was 0.1 each (*100 meant they improved the article from 100 to 110). In other words, in my experience as a FA (and GA, and DYK) creator, one user does most of the work, others do only a little bit that even if added together does not exceed the contributions of a single, main creator (that said, I am familiar with exceptions to this rule - I've seen FA/GA/DYKs which were truly collaborative - but they are, I again stress this, exceptions to what I've usually observed).

My experience with FA's is that actually after the certain level of quality has been achieved (for instance the article has been selected as FA) the majority of subsequent edits are actually detrimental and substandard - they only make the article worse and lower the quality. In my opinion, protection of the quality id one of the major issues we need to discuss at some point.